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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrCustomStageUnitTest_DEFINED
#define GrCustomStageUnitTest_DEFINED
#include "SkRandom.h"
#include "GrNoncopyable.h"
#include "SkTArray.h"
#if SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
class GrCustomStage;
class GrContext;
class GrTexture;
class GrCustomStageTestFactory : GrNoncopyable {
public:
// Used to access the dummy textures in TestCreate procs.
enum {
kSkiaPMTextureIdx = 0,
kAlphaTextureIdx = 1,
};
typedef GrCustomStage* (*CreateProc)(SkRandom*, GrContext*, GrTexture* dummyTextures[]);
GrCustomStageTestFactory(CreateProc createProc) {
fCreateProc = createProc;
GetFactories()->push_back(this);
}
static GrCustomStage* CreateStage(SkRandom* random,
GrContext* context,
GrTexture* dummyTextures[]) {
uint32_t idx = random->nextRangeU(0, GetFactories()->count() - 1);
GrCustomStageTestFactory* factory = (*GetFactories())[idx];
return factory->fCreateProc(random, context, dummyTextures);
}
private:
CreateProc fCreateProc;
static SkTArray<GrCustomStageTestFactory*, true>* GetFactories();
};
/** GrCustomStage subclasses should insert this macro in their declaration to be included in the
* program generation unit test.
*/
#define GR_DECLARE_CUSTOM_STAGE_TEST \
static GrCustomStageTestFactory gTestFactory; \
static GrCustomStage* TestCreate(SkRandom*, GrContext*, GrTexture* dummyTextures[2])
/** GrCustomStage subclasses should insert this macro in their implemenation file. They must then
* also implement this static function:
* GrCustomStage* CreateStage(SkRandom*, GrContext*, GrTexture* dummyTextures[2]);
* dummyTextures[] are valied textures that they can optionally use for their texture accesses. The
* first texture has config kSkia8888_PM_GrPixelConfig and the second has kAlpha_8_GrPixelConfig.
* TestCreate functions are also free to create additional textures using the GrContext.
*/
#define GR_DEFINE_CUSTOM_STAGE_TEST(CustomStage) \
GrCustomStageTestFactory CustomStage :: gTestFactory(CustomStage :: TestCreate)
#else // !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
// The unit test relies on static initializers. Just declare the TestCreate function so that
// its definitions will compile.
#define GR_DECLARE_CUSTOM_STAGE_TEST \
static GrCustomStage* TestCreate(SkRandom*, GrContext*, GrTexture* dummyTextures[2])
#define GR_DEFINE_CUSTOM_STAGE_TEST(X)
#endif // !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
#endif
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